Sometime SCCM distribution points just fail to work, this script will connect to your SCCM environment, and get a dynamic list of your DP’s and check standard ports used to communicate back and forth between it and the site server.

To set get this to work you’ll need to enter two things:

nter your SiteCode

$SiteCode = "[SiteCode]" # Site code e.g. ABC

Enter your Site Server FQDN

$ProviderMachineName = "[SiteServer FQDN]" #SMS Provider machine name e.g Sccm.contoso.com

Once this is entered the script can be ran from anywhere with a user account that has the right permissions on the SCCM platform (Read Access minimum)

The script uses the .net function to check the ports and produce a report based on Success or Failure, by Default the script will only output the $bad ports, but I’ve included the options to show the $good ports should you want to see them.

Clear-Host
# Press 'F5' to run this script. Running this script will load the ConfigurationManager
# module for Windows PowerShell and will connect to the site.
#
# This script was auto-generated at '02/04/2024 15:45:42'.

# Site configuration
$SiteCode = "[SiteCode]" # Site code e.g. ABC 
$ProviderMachineName = "[SiteServer FQDN]" # SMS Provider machine name e.g sccm.contoso.com

# Customizations
$initParams = @{}
#$initParams.Add("Verbose", $true) # Uncomment this line to enable verbose logging
#$initParams.Add("ErrorAction", "Stop") # Uncomment this line to stop the script on any errors

# Do not change anything below this line

# Import the ConfigurationManager.psd1 module 
if($null -eq (Get-Module ConfigurationManager)) {
    Import-Module "$($ENV:SMS_ADMIN_UI_PATH)\..\ConfigurationManager.psd1" @initParams 
}

# Connect to the site's drive if it is not already present
if($null -eq (Get-PSDrive -Name $SiteCode -PSProvider CMSite -ErrorAction SilentlyContinue)) {
    New-PSDrive -Name $SiteCode -PSProvider CMSite -Root $ProviderMachineName @initParams
}

# Set the current location to be the site code.
Set-Location "$($SiteCode):\" @initParams

#changed this to Dynamic in the Foreach loop
#$dps = @("[FQDN of DP1]", "[FQDN of DP2]")

#difined array
$results = @()
#Write-host "`n`n`n`n`n`n`n`n"

#loop through each DP
foreach ($dp in (Get-CMDistributionPoint | Select-Object -ExpandProperty NetworkOSPath)) {
    $CleanedDPName = $dp -replace "\\", ""
	Write-host "`nProcessing " -NoNewline -ForegroundColor Yellow
    Write-host $CleanedDPName -NoNewline
    Write-host ", please wait..." -ForegroundColor Yellow
    #check if DP is also a management point and check 10123 port
    $ismanagementpoint = Get-CMManagementPoint -ErrorAction SilentlyContinue| Where-Object {$DP -match $_.NetworkOSpath}
	if ($ismanagementpoint) {
        $ports = @(80, 135, 139, 443, 445, 10123)
        #$ports = @(67, 68, 80, 135, 139, 443, 445, 4011, 8530, 8531, 10123) #full range of ports inc pxe ports
    } else {
        $ports = @(80, 135, 139, 443, 445)
        #$ports = @(67, 68, 80, 135, 139, 443, 445, 4011, 8530, 8531) #full range of ports inc pxe, wsus ports
    }
	
    foreach ($port in $ports) {
        Write-host "`tTesting Port " -NoNewline -ForegroundColor Cyan
        Write-Host "$port " -nonewline
        
        #test-netconnection is slow and doesn't have a timeout uncomment if you want to use this.
        #$test = Test-NetConnection -ComputerName $dp -port $port -InformationLevel Detailed
        
        #.net command does the same but can have a timeout, set it to 300 ms
        $test = (New-Object System.Net.Sockets.TcpClient).ConnectAsync("$CleanedDPName", "$port").Wait(300)
			
        if ($test -eq "True") {
            Write-host "Succeeded" -ForegroundColor Green
            $output = [PSCustomObject]@{
                DistributionPoint = $CleanedDPName
                Port = $port
                Result = "Successful"
            }
        } else {
            Write-host "Failed" -ForegroundColor RED
            $output = [PSCustomObject]@{
                DistributionPoint = $CleanedDPName
                Port = $port
                Result = "Failed"
            }
        }    
        $results += $output
    }
}

$bad = @()
$good = @()
foreach ($result in $results) {
    if ($($result.result) -eq "Successful") {
        $good += $result
    } else {
        $bad += $result
    }
}

Write-host "`n`n"
if ($bad.count -gt 0) {
    Write-warning "`nPort Test, Failed, failures listed below :("
    $bad | Format-Table -AutoSize
}else{
    Write-host "Port test completed successfully :)!" -ForegroundColor Green
}
#if you want the GOOD ports, uncomment below
#$good | FT -AutoSize

This is also available from my Github page.